increasing the frequency to every 2 weeks

data/systemd/pamac-mirrorlist.timer

 [Unit]
-Description=Monthly generate mirrorlist
+Description=Generate mirrorlist every fortnight
 
 [Timer]
-OnCalendar=monthly
+OnCalendar=*-*-1,15 0:00:00
 RandomizedDelaySec=12h
 Persistent=true